*{padding: 0; margin: 0}
  .slider {
    position: relative;
    height: 400px;
    min-width: 1004px;
    width: 100%;
    overflow: hidden;
  }
  .slider .slider-pointer {
    position: absolute;
    bottom: 20px;
    color: #fff;
    list-style: none;
    padding: 0;
    z-index: 999;
  }
  .slider .slider-pointer li {
    display: inline-block;
    margin: 0 15px;
    width: 15px;
    height: 15px;
    border-radius: 15px;
    background-color: #ffffff;
    opacity: 0.85;
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.5);
    transition: all 320ms ease;
  }
  .slider .slider-pointer li:hover {
    background-color: orange;         /*底下导航hover时的颜色背景*/
  }
  .slider .slider-pointer li.active {
    background-color: blue;          /*底下导航选中时的颜色背景*/
  }
  .slider .slider-inner {
    width: 100%;
    height: 100%;
    position: relative;
  }
  .slider .slider-inner .item {
    width: 100%;
    height: 100%;
    float: left;
  }
  .slider .slider-inner .img {
    background-position: center top !important;
    width: 100%;
    height: 100%;
  }
  .slider .slider-control {
    position: absolute;
    width: 30px;
    height: 30px;
    z-index: 999;
    border-radius: 30px;
    text-align: center;
    font-weight: 900;
    font-size: 20px;
    line-height: 30px;
    background-color: #ffffff;
    opacity: 0.5;
    cursor: pointer;
    top: 40%;
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.5);
    transition: all 320ms ease;
  }
  .slider .slider-control:hover {
    opacity: 0.65;
    background-color: blue;         /*左右控制hover时的背景颜色*/
  }
  .slider .slider-control:active {
    opacity: 0.85;
  }
  .slider .slider-control.prev {
    display: none;
    left: 20px;
  }
  .slider .slider-control.next {
    display: none;
    right: 20px;
  }
  .slider:hover .slider-control.prev {
    display: block;
    left: 20px;
  }
  .slider:hover .slider-control.next {
    display: block;
    right: 20px;
  }